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State the characteristics of an image formed by a concave lens. 02:10 In the case of image formation by a concave lens , what can you say a... 03:41 Draw a ray diagram to show image formation by a concave lens. 03:15 State the Cartesian sign convention for refraction of light (ima...
Capturing an ideal scene f by an imaging device with the point-spread function (PSF) h, the observed image g is modeled as a convolution: g(x) = ( f ∗ h)(x). (1) This linear image formation model, even if it is very sim- ple, is a reasonably accurate approximation of many ...
Phase mask optimization refers to the models where we simulate image formation through the opt-conv layer consisting of a 4f system with a phase mask in the Fourier plane. Here the tensor to optimize is the height profile of the phase mask, from which the system PSF is computed. The height...
However, since the formation of metal artifacts involves complicated mechanisms such as beam hardening, scatter, noise, and the nonlinear partial volume effect [5], it is very challenging to model and reduce metal artifacts in the CT images with traditional approaches. Therefore, recent approaches ...
11.4.2 Models for Microscope Image Formation Most microscopes can be assumed to be shift invariant linear systems with a position-independent psf, where point sources located anywhere in the sample create psfs of constant shape at the detector. In its simplest form, then, the formula for microsc...
(Fig.2d). Growth for several cell cycles results in the multi-cellular chains ofB. subtilisand microcolony formation, providing a dataset with increasing cell density and a large number of cell-to-cell contacts. When we tested different networks for this challenging dataset, we found that U-...
1)比如推理得到class序号是980,需要先在imagenet_classes.txt中找到第981个class(因为索引从0开始,所以是第981个类别,但在下面imagenet_classes中查索引还是按照980查找)是 n09472597,然后再在imagenet_synsets.txt 中找这个序号对应的含义,是volcano,所以推理结果的对应是火山,这时候可以与输入的数据图作对比,检验...
For this reason, the curvature of the lens surface, and, particularly, a radius of curvature of the image-side lens surface decreases so that it is difficult to perform lens formation. In addition, since the number of lenses of the second lens unit L2 increases in order to obtain a ...
A zoom lens includes an aperture stop and a plurality of lens units which are moved during zooming. The plurality of lens units includes, on an object side of the aperture stop, a l